Ok, In the market for a ~400$ MTB so I stopped at the LBS and rode a trek 4500 and a rockhopper. Heres my question, when riding the 4500 it felt all wrong as if the tire was flat, an odd combination of slightly slugish but moreso very twitchy. The tires were aired up by the ssalesperson just before i hoped on for the test ride so it isnt the case. On the contrary the specialized bike rode fine, so i guess i can rule out the fact that im out of riding shape). Tread on the tires was similair so was that feeling the difference in "geometry"'s affect that is so often described (yeah im a self-proclaimed noob), or just a crappy fork/setup (rs judy). Just wondering before i write the bike off. Thanks in advance.

--C